Improve package naming convention

[xmunoz]

We are currently using a very coarse algorithm to compute package names. In #161, @svigerske indicated a preferred solution:
#161 (comment)

[svigerske]

It probably doesn't help (and I just want to show off my nice script), but this is what GAMS uses to check that it doesn't introduce unwanted dependencies on Unix platforms by parsing ldd -v output: https://distdocs.gams.com/34/testlib_ml/libdepend.awk (https://distdocs.gams.com/34/testlib_ml/libdepend.sh)
(It is due to be rewritten, though, because there are some issues with the rpath/loader_path/etc handling on macOS)